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US 12,714,570 B2Granted
Metal-backed patella component of an orthopaedic knee prosthesis and associated method of making the same
AssigneeDepuy Ireland Unlimited Company
InventorsAnthony J. Webb, Nicholas A. Miltner, Evan P. O'Mahony, Fionnan A. McNamara, Edward P. Kavanagh
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Abstract
An orthopaedic implant includes a patella component having a metal base with a polymer bearing molded thereto. A method for making a patella component is also disclosed.
Claims5
A method of making a patella component, comprising:
- disposing a porous-metal coating onto (i) an anterior surface and (ii) a number of pegs of a solid-metal base,
- disposing the porous-metal coating in a number of pockets formed in a perimeter sidewall that extends between the anterior surface and a posterior surface of the solid-metal base, and
- molding a polymer bearing onto the posterior surface of the solid-metal base such that (i) a portion of an anterior surface of the polymer bearing is disposed within a number of pockets formed in the posterior surface of the solid-metal base, and (ii) a posterior surface of the polymer bearing forms a patella bearing surface that is configured to articulate with a pair of femoral condyles of a femoral component.
Dependencies are inferred from the claim text.